CN107914019A - A kind of iron nickel Al-based agent diamond tool and preparation method thereof - Google Patents
A kind of iron nickel Al-based agent diamond tool and preparation method thereof Download PDFInfo
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- CN107914019A CN107914019A CN201711002392.5A CN201711002392A CN107914019A CN 107914019 A CN107914019 A CN 107914019A CN 201711002392 A CN201711002392 A CN 201711002392A CN 107914019 A CN107914019 A CN 107914019A
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- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 80
- 239000010432 diamond Substances 0.000 title claims abstract description 80
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 25
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 70
- 238000005245 sintering Methods 0.000 claims abstract description 59
- 238000000227 grinding Methods 0.000 claims abstract description 27
- 239000003082 abrasive agent Substances 0.000 claims abstract description 18
- 239000011863 silicon-based powder Substances 0.000 claims abstract description 16
- 229910000048 titanium hydride Inorganic materials 0.000 claims abstract description 15
- 229910001005 Ni3Al Inorganic materials 0.000 claims abstract description 12
- 229910017372 Fe3Al Inorganic materials 0.000 claims abstract description 10
- 239000002245 particle Substances 0.000 claims description 49
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 22
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 18
- 229910017755 Cu-Sn Inorganic materials 0.000 claims description 17
- 229910017927 Cu—Sn Inorganic materials 0.000 claims description 17
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 11
- 239000000758 substrate Substances 0.000 claims description 9
- 238000000498 ball milling Methods 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000007767 bonding agent Substances 0.000 abstract description 15
- 229910052751 metal Inorganic materials 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 5
- 239000011159 matrix material Substances 0.000 abstract description 3
- 238000007731 hot pressing Methods 0.000 description 6
- 229910017052 cobalt Inorganic materials 0.000 description 5
- 239000010941 cobalt Substances 0.000 description 5
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 4
- 229910052737 gold Inorganic materials 0.000 description 4
- 239000010931 gold Substances 0.000 description 4
- 229910000765 intermetallic Inorganic materials 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 239000012752 auxiliary agent Substances 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000002547 anomalous effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 102000008133 Iron-Binding Proteins Human genes 0.000 description 1
- 108010035210 Iron-Binding Proteins Proteins 0.000 description 1
- 229910003310 Ni-Al Inorganic materials 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000009918 complex formation Effects 0.000 description 1
- 239000000039 congener Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910000907 nickel aluminide Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
-
- B22F1/0003—
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/04—Alloys containing less than 50% by weight of each constituent containing tin or lead
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F2005/001—Cutting tools, earth boring or grinding tool other than table ware
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F2005/002—Tools other than cutting tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The invention discloses a kind of iron nickel Al-based agent diamond tool and preparation method thereof.This diamond tool includes metallic bond, sintering aid and abrasive material；Metallic bond is by 35~45 mass parts Fe3Al powder and 35~45 mass parts Ni3Al powder forms；Sintering aid is by 5~20 mass parts Cu Sn prealloy powder, 0.5~2 mass parts Si powder, 0.5~2 mass parts B powder and 0.5~2 mass parts TiH2Powder forms；Abrasive material is diamond, and the volume fraction that diamond abrasive accounts for grinding layer is 5~25%.Also disclose the preparation method of this iron nickel Al-based agent diamond tool.The present invention is by Fe3Al and Ni3Al as the bonding agent of dry-type processing diamond tool can make full use of its high temperature creep strength after being sufficiently mixed, medium temperature intensity, the performance of minute yardstick high-temerature creep is resisted in being ground, can preferably be combined with matrix, to change the low creep strength feature of conventional metals bonding agent.
Description
Technical field
The present invention relates to a kind of iron nickel Al-based agent diamond tool and preparation method thereof.
Background technology
Diamond tool is widely used in concrete, complex formation, the structure such as ceramics and bituminous paving or material processing and
The field such as scene cut-out and drilling.The metallic bond used in the fabrication process is mainly with copper-based, cobalt-based, iron-based, Ni-based, tungsten
Based on base and Al-based agent.Wherein, the non-ferrous metal cost such as cobalt, copper is higher, and diamond abrasive is easily de- in early stage grinding process
Fall problem.It is more to being studied with iron for cobalt in recent years, nickel aluminide mixing is added using based on iron-based and is used as bonding agent system
Diamond tool, synthesized by appropriate design on material structure, there is good compatibility, high temperature creep strength to diamond
The advantages that height, diamond hold is high and idiosome shape has been kept.Dry-type processing can be carried out to hard brittle material to a certain extent.
Although the bond strength height of metal-bonded diamond grinding tool, good moldability, service life are grown, suitable for brittle material
The processing of material.Comparatively speaking, bronze binding agent self-sharpening is poor, easily blocks fever, finishing difficulty；The higher price of cobalt makes gold
The production cost of hard rock grinding tool is high；Iron belongs to congeners with cobalt, and Nature comparison is similar, cheap, but iron-holder is more than
When 40%, iron-binding agent is very sensitive to sintering temperature, and the hardness of grinding tool is easily caused because of underburnt and excessive erosion diamond
Decline.
The content of the invention
It is an object of the invention to provide a kind of iron nickel Al-based agent diamond tool and preparation method thereof.
The technical solution used in the present invention is：
A kind of iron nickel Al-based agent diamond tool, including metallic bond, sintering aid and abrasive material；Metallic bond
By 35~45 mass parts Fe3Al powder and 35~45 mass parts Ni3Al powder forms；Sintering aid is closed in advance by 5~20 mass parts Cu-Sn
Bronze, 0.5~2 mass parts Si powder, 0.5~2 mass parts B powder and 0.5~2 mass parts TiH2Powder forms；Abrasive material is diamond, gold
The volume fraction that hard rock abrasive material accounts for grinding layer is 5~25%.
Fe3The particle diameter of Al powder is 5~50 μm, Ni3The particle diameter of Al powder is 5~50 μm, the particle diameter of Cu-Sn prealloy powder for 5~
75 μm, the particle diameter of Si powder is 1~15 μm, and the particle diameter of B powder is 1~15 μm, TiH2The particle diameter of powder is 1~15 μm.
The mass fraction of Sn is 15~20% in Cu-Sn prealloy powder.
The particle diameter of diamond abrasive is 12~120 mesh.
A kind of preparation method of iron nickel Al-based agent diamond tool, comprises the following steps：
1) metallic bond, sintering aid and abrasive material are weighed by above-mentioned composition, is mixed in ball mill, obtain diamond
Instrument prepares material；
2) diamond tool is prepared into material cold moudling, obtains diamond tool base substrate；
3) diamond tool base substrate is sintered, obtains diamond tool.
In step 1), the rotating speed of ball mill is 150~250r/min, and Ball-milling Time is 3~5h, and ratio of grinding media to material is (5~15)：
1。
In step 2), the green density of diamond tool base substrate is 50~70% solid densities, cold pressing pressure for 200~
300MPa。
In step 3), the mode of sintering is hot pressed sintering or gas pressure sintering.
In step 3), sintering temperature is 600~1200 DEG C, and sintering time be 10~40min, sintering pressure is 30~
100MPa。
The beneficial effects of the invention are as follows：
The present invention is by Fe3Al and Ni3Al can be fully sharp as the bonding agent of dry-type processing diamond tool after being sufficiently mixed
With its high temperature creep strength, medium temperature intensity, resists the performance of minute yardstick high-temerature creep in being ground, can be preferably with matrix
With reference to change the low creep strength feature of conventional metals bonding agent.The present invention diamond tool with the addition of at the same time it is a variety of not
Same sintering aid, can improve the sintering character of system and improve its microstructure.
Specifically：
1) intermetallic compound Fe3Al have anomalous yield intensity thus have excellent medium temperature intensity, and price is low
It is honest and clean, and intermetallic compound Ni3There is Al intermetallic compounds good wide temperature range anomalous yield characteristic and dry type high temperature to have
Oxygen environment adaptability, therefore by Fe3Al and Ni3Al can fill after being sufficiently mixed as the bonding agent of dry-type processing diamond tool
Divide and utilize its high temperature creep strength, medium temperature intensity, resists the performance of minute yardstick high-temerature creep in being ground, can be more with matrix
Combine well, to change the low creep strength feature of conventional metals bonding agent.
2) present invention with the addition of several different auxiliary agents, in order to improves the sintering character of system and improves that its is microcosmic
Structure.The Cu-Sn of addition can thinning microstructure, improve the compactness of grinding tool；The B powder of addition can purify crystal boundary, refinement sintering
Tissue, improves the toughness of bonding agent；The Si powder of addition can improve sintering character, reduce the fire damage to diamond particles；Addition
TiH2Sintering strength can be improved, increases bonding agent to the hold of diamond and improves the burning of Fe-Al, Ni-Al compound
Tie performance.
Embodiment
A kind of iron nickel Al-based agent diamond tool, including metallic bond, sintering aid and abrasive material；Metallic bond
By 35~45 mass parts Fe3Al powder and 35~45 mass parts Ni3Al powder forms；Sintering aid is closed in advance by 5~20 mass parts Cu-Sn
Bronze, 0.5~2 mass parts Si powder, 0.5~2 mass parts B powder and 0.5~2 mass parts TiH2Powder forms；Abrasive material is diamond, gold
The volume fraction that hard rock abrasive material accounts for grinding layer is 5~25%.
Preferably, a kind of iron nickel Al-based agent diamond tool, including metallic bond, sintering aid and abrasive material；Gold
Belong to bonding agent by 40~43 mass parts Fe3Al powder and 40~43 mass parts Ni3Al powder forms；Sintering aid is by 11~17 mass parts
Cu-Sn prealloy powder, 1~2 mass parts Si powder, 0.5~1 mass parts B powder and 1~1.5 mass parts TiH2Powder forms；Abrasive material is gold
Hard rock, the volume fraction that diamond abrasive accounts for grinding layer are 15~25%.
Further, the volume fraction that diamond abrasive accounts for grinding layer is 18.75~25%.
Preferably, Fe3The particle diameter of Al powder is 5~50 μm, Ni3The particle diameter of Al powder is 5~50 μm, the grain of Cu-Sn prealloy powder
Footpath is 5~75 μm, and the particle diameter of Si powder is 1~15 μm, and the particle diameter of B powder is 1~15 μm, TiH2The particle diameter of powder is 1~15 μm；Into one
Step is preferable, Fe3The particle diameter of Al powder is 8~15 μm, Ni3The particle diameter of Al powder is 10~20 μm, and the particle diameter of Cu-Sn prealloy powder is 8
~20 μm, the particle diameter of Si powder is 3~10 μm, and the particle diameter of B powder is 2~5 μm, TiH2The particle diameter of powder is 3~10 μm.
Preferably, the mass fraction of Sn is 15~20% in Cu-Sn prealloy powder.
Preferably, the particle diameter of diamond abrasive is 12~120 mesh；It is further preferred that the particle diameter of diamond abrasive is 30
~60 mesh.
A kind of preparation method of iron nickel Al-based agent diamond tool, comprises the following steps：
1) metallic bond, sintering aid and abrasive material are weighed by above-mentioned composition, is mixed in ball mill, obtain diamond
Instrument prepares material；
2) diamond tool is prepared into material cold moudling, obtains diamond tool base substrate；
3) diamond tool base substrate is sintered, obtains diamond tool.
Preferably, in step 1), the rotating speed of ball mill is 150~250r/min, and Ball-milling Time is 3~5h, and ratio of grinding media to material is
(5~15)：1；It is further preferred that in step 1), the rotating speed of ball mill is 150~250r/min, Ball-milling Time for 3~
4.5h, ratio of grinding media to material are (6~12)：1.
Further, in step 1), the cumulative volume of abrading-ball and material is no more than the 2/3 of ball milling tank volume.
Preferably, in step 2), the green density of diamond tool base substrate is 50~70% solid densities, and cold pressing pressure is
200~300Mpa；It is further preferred that in step 2), cold pressing pressure is 220~280MPa.
Further, the cold moudling described in step 2) carries out in hard alloy cold stamping die.
Preferably, in step 3), the mode of sintering is hot pressed sintering or gas pressure sintering.
Preferably, in step 3), sintering temperature is 600~1200 DEG C, and sintering time is 10~40min, and sintering pressure is
30~100MPa；It is further preferred that in step 3), sintering temperature is 800~1050 DEG C, and sintering time is 20~35min, is burnt
Knot pressure power is 30~50MPa.
Fe of the present invention3Al powder, Ni3Al powder, Cu-Sn prealloy powder, Si powder, B powder and TiH2The purity of powder is all higher than
99.9%.
Present disclosure is described in further detail below by way of specific embodiment.
Embodiment 1：
A kind of iron nickel Al-based agent diamond tool, includes the following steps：
Fe3The mass fraction of Al is 40 parts, Ni3The mass fraction of Al is 40 parts, Fe3The particle diameter of Al powder is 8 μm, Ni3Al powder
Particle diameter be 10 μm.The mass fraction of Cu-Sn pre-alloyed powders is 17 parts, its particle diameter is 15 μm；The mass fraction of Si powder is 1
Part, its particle diameter is 3 μm；The mass fraction of B powder is 0.5 part, its particle diameter is 2 μm；TiH2The mass fraction of powder is 1.5 parts, its
Particle diameter is 3 μm.Diamond abrasive is added, it is 25% it is accounted for the volume fraction of grinding layer, its particle size is 50/60 mesh.
The metallic bond, sintering aid and abrasive material of aforementioned proportion are put into ball mill to be sufficiently mixed, drum's speed of rotation 200r/min,
Ball-milling Time is 3h, ratio of grinding media to material 6:1.Mixed grinding tool is prepared into material it is put into hard alloy cold stamping die and is cold-pressed into
Type, pressure 220MPa, the green density of obtained tool body is 50% solid density；Hot pressing burning is carried out to tool body
Knot, sintering temperature are 800 DEG C, sintering time 35min, sintering pressure 30MPa, and tool body relies on the heat that hot pressing furnace provides
The high enthalpy that release can be put with certain pressure generation and sintering reaction produces reaction, finally obtains diamond tool.
Embodiment 2：
A kind of iron nickel Al-based agent diamond tool, includes the following steps：
Fe3The mass fraction of Al is 42 parts, Ni3The mass fraction of Al is 42 parts, Fe3The particle diameter of Al powder is 15 μm, Ni3Al
The particle diameter of powder is 20 μm.The mass fraction of Cu-Sn pre-alloyed powders is 12 parts, its particle diameter is 20 μm；The mass fraction of Si powder is 2
Part, its particle diameter is 10 μm；The mass fraction of B powder is 1 part, its particle diameter is 5 μm；TiH2The mass fraction of powder is 1 part, its particle diameter
For 10 μm.Diamond abrasive is added, it is 18.75% it is accounted for the volume fraction of grinding layer, its particle size is 40/50 mesh.
The metallic bond, sintering aid and abrasive material of aforementioned proportion are put into ball mill to be sufficiently mixed, drum's speed of rotation 150r/min,
Ball-milling Time is 4h, ratio of grinding media to material 8:1.Mixed grinding tool is prepared into material it is put into hard alloy cold stamping die and is cold-pressed into
Type, pressure 250MPa, the green density of obtained tool body is 58% solid density；Hot pressing burning is carried out to tool body
Knot, sintering temperature are 900 DEG C, sintering time 30min, sintering pressure 50MPa, and tool body relies on the heat that hot pressing furnace provides
The high enthalpy that release can be put with certain pressure generation and sintering reaction produces reaction, finally obtains diamond tool.
Embodiment 3：
A kind of iron nickel Al-based agent diamond tool, includes the following steps：
Fe3The mass fraction of Al is 43 parts, Ni3The mass fraction of Al is 43 parts, Fe3The particle diameter of Al powder is 10 μm, Ni3Al
The particle diameter of powder is 15 μm.The mass fraction of Cu-Sn pre-alloyed powders is 11 parts, its particle diameter is 8 μm.The mass fraction of Si powder is 1
Part, its particle diameter is 5 μm；The mass fraction of B powder is 0.5 part, its particle diameter is 4 μm；TiH2The mass fraction of powder is 1.5 parts, its
Particle diameter is 5 μm.Diamond abrasive is added, it is 25% it is accounted for the volume fraction of grinding layer, its particle size is 30/40 mesh.
The metallic bond, sintering aid and abrasive material of aforementioned proportion are put into ball mill to be sufficiently mixed, drum's speed of rotation 250r/min,
Ball-milling Time is 4.5h, ratio of grinding media to material 12:1.By mixed grinding tool prepare material be put into hard alloy cold stamping die carry out it is cold
Molded, pressure 280MPa, the green density of obtained tool body is 68% solid density；Hot pressing is carried out to tool body
Sintering, sintering temperature are 1050 DEG C, sintering time 20min, sintering pressure 40MPa, and tool body is provided by hot pressing furnace
Thermal energy and certain pressure occur and sintering reaction put release high enthalpy produce reaction, finally obtain diamond tool.
The present invention takes the lead in utilizing Fe based on Fe bases3Medium temperature mechanical property good Al and Ni3High temperature excellent Al is compacted
Diamond abrasive tool is made in intensity adjustable reaction, while with the addition of Cu-Sn pre-alloyed powders in this process and improve grinding tool compactness, adds
Si powder can improve bonding agent mechanical property, mitigate the fire damage to diamond, the B powder of addition improves tissue, and refinement is brilliant
Grain, the TiH of addition2Powder auxiliary agent improves the bond strength and fire damage of diamond.
Compare bonding agent mainly with diamond tools such as Co, Cu, Mn for, iron nickel Al-based agent diamond of the present invention
Instrument has advantages below：
A, Fe has diamond good compatibility and wetability, by the use of Fe bases as bonding agent, not only improves diamond
The bond strength of instrument, avoids grinding tool Grain Falling Off caused by deformation in grinding process, and Fe element resources enrich, valency
Lattice are cheap；
B, by Fe3Al、Ni3Reacted after Al mixing, medium temperature intensity and Ni- that Fe-Al compounds are good can be made full use of
Al compound high temperature creep strengths, change the feature of the low creep strength of conventional metals binding agent grinder；
C, a variety of auxiliary agents added, such as TiH2Solution strengthening can be formed, improves sintering strength, B, Si powder of addition incorporate
In Fe-Al compounds, sintering structure is on the one hand refined, improves the toughness of bonding agent, on the other hand reduces Fe-Al intermetallics
Thing fusing point, improves the sintering character of bonding agent.
Claims (9)
- A kind of 1. iron nickel Al-based agent diamond tool, it is characterised in that：Including metallic bond, sintering aid and abrasive material； Metallic bond is by 35~45 mass parts Fe3Al powder and 35~45 mass parts Ni3Al powder forms；Sintering aid is by 5~20 mass parts Cu-Sn prealloy powder, 0.5~2 mass parts Si powder, 0.5~2 mass parts B powder and 0.5~2 mass parts TiH2Powder forms；Abrasive material is Diamond, the volume fraction that diamond abrasive accounts for grinding layer are 5~25%.
- A kind of 2. iron nickel Al-based agent diamond tool according to claim 1, it is characterised in that：Fe3The particle diameter of Al powder For 5~50 μm, Ni3The particle diameter of Al powder is 5~50 μm, and the particle diameter of Cu-Sn prealloy powder is 5~75 μm, the particle diameter of Si powder for 1~ 15 μm, the particle diameter of B powder is 1~15 μm, TiH2The particle diameter of powder is 1~15 μm.
- A kind of 3. iron nickel Al-based agent diamond tool according to claim 2, it is characterised in that：Cu-Sn prealloys The mass fraction of Sn is 15~20% in powder.
- A kind of 4. iron nickel Al-based agent diamond tool according to claim 1, it is characterised in that：Diamond abrasive Particle diameter is 12~120 mesh.
- A kind of 5. preparation method of iron nickel Al-based agent diamond tool, it is characterised in that：Comprise the following steps：1) metallic bond, sintering aid and abrasive material are weighed by Claims 1 to 4 any one of them composition, in ball mill Mixing, obtains diamond tool and prepares material；2) diamond tool is prepared into material cold moudling, obtains diamond tool base substrate；3) diamond tool base substrate is sintered, obtains diamond tool.
- A kind of 6. preparation method of iron nickel Al-based agent diamond tool according to claim 5, it is characterised in that：Step It is rapid 1) in, the rotating speed of ball mill is 150~250r/min, and Ball-milling Time is 3~5h, and ratio of grinding media to material is (5~15)：1.
- A kind of 7. preparation method of iron nickel Al-based agent diamond tool according to claim 5, it is characterised in that：Step It is rapid 2) in, the green density of diamond tool base substrate is 50~70% solid densities, and cold pressing pressure is 200~300MPa.
- A kind of 8. preparation method of iron nickel Al-based agent diamond tool according to claim 5, it is characterised in that：Step It is rapid 3) in, the mode of sintering is hot pressed sintering or gas pressure sintering.
- A kind of 9. preparation method of iron nickel Al-based agent diamond tool according to claim 8, it is characterised in that：Step It is rapid 3) in, sintering temperature be 600~1200 DEG C, sintering time is 10~40min, and sintering pressure is 30~100MPa.
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| CN201711002392.5A CN107914019B (en) | 2017-10-24 | 2017-10-24 | A kind of iron nickel Al-based agent diamond tool and preparation method thereof |
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| CN201711002392.5A CN107914019B (en) | 2017-10-24 | 2017-10-24 | A kind of iron nickel Al-based agent diamond tool and preparation method thereof |
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| CN107914019B CN107914019B (en) | 2019-10-25 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110116376A (en) * | 2019-06-21 | 2019-08-13 | 广东工业大学 | A kind of metallic bond grinding tool and preparation method thereof |
| CN112620627A (en) * | 2020-12-20 | 2021-04-09 | 湖南富栊新材料股份有限公司 | Surface nanocrystallization modified metal powder and application thereof |
| CN114247957A (en) * | 2021-12-29 | 2022-03-29 | 昆山耐信金刚石工具有限公司 | Welding process for corner post diamond pen |
| CN115255368A (en) * | 2022-07-15 | 2022-11-01 | 广东工业大学 | Soft-hard composite metal bond diamond tool and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110116376A (en) * | 2019-06-21 | 2019-08-13 | 广东工业大学 | A kind of metallic bond grinding tool and preparation method thereof |
| CN112620627A (en) * | 2020-12-20 | 2021-04-09 | 湖南富栊新材料股份有限公司 | Surface nanocrystallization modified metal powder and application thereof |
| CN114247957A (en) * | 2021-12-29 | 2022-03-29 | 昆山耐信金刚石工具有限公司 | Welding process for corner post diamond pen |
| CN115255368A (en) * | 2022-07-15 | 2022-11-01 | 广东工业大学 | Soft-hard composite metal bond diamond tool and preparation method thereof |
| CN115255368B (en) * | 2022-07-15 | 2023-08-04 | 广东工业大学 | Diamond tool with soft and hard composite metal binding agent and preparation method thereof |
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